1102111123 has 4 divisors (see below), whose sum is σ = 1110040120. Its totient is φ = 1094182128.

The previous prime is 1102111121. The next prime is 1102111147. The reversal of 1102111123 is 3211112011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3211112011 = 2833 ⋅1133467.

It is a cyclic number.

It is not a de Polignac number, because 1102111123 - 2¹ = 1102111121 is a prime.

It is a super-2 number, since 2×1102111123² = 2429297854880642258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1102111121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3964290 + ... + 3964567.

It is an arithmetic number, because the mean of its divisors is an integer number (277510030).

Almost surely, 2^1102111123 is an apocalyptic number.

1102111123 is a deficient number, since it is larger than the sum of its proper divisors (7928997).

1102111123 is an equidigital number, since it uses as much as digits as its factorization.

1102111123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7928996.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1102111123 is about 33198.0590245876. The cubic root of 1102111123 is about 1032.9400783730.

Adding to 1102111123 its reverse (3211112011), we get a palindrome (4313223134).

It can be divided in two parts, 1102 and 111123, that added together give a square (112225 = 335²).

The spelling of 1102111123 in words is "one billion, one hundred two million, one hundred eleven thousand, one hundred twenty-three".